What color is #304A57?

#304A57 is a dark, desaturated azure, closest to the named color Nocturne. It belongs to the gray family of colors.

What is the RGB value of #304A57?

The RGB value is 48, 74, 87: 48 red, 74 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #304A57?

The complementary color is #573D30, found by rotating the hue 180° on the color wheel.

Is black or white text better on #304A57?

White text. Black text has a contrast ratio of 2.24:1 and white text 9.36:1. WCAG asks for at least 4.5:1 for normal text.

#304A57 color

#304A57 rgb(48, 74, 87)

Shades of gray

The hex color #304A57 is a dark, desaturated azure.

In the RGB color model it is made of 18.8% red, 29% green and 34.1% blue (48, 74, 87).

Its hue angle is 200°, with 29% saturation and 26% lightness. For print, the CMYK equivalent is 45% cyan, 15% magenta, 0% yellow and 66% black.

The closest named color is Nocturne (#344D58), a difference of 1.4 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 9.36:1).

#304A57 color codes

HEX	`#304A57`
RGB	`rgb(48, 74, 87)`
RGB percent	`rgb(18.8%, 29%, 34.1%)`
HSL	`hsl(200, 29%, 26%)`
HSV / HSB	`hsv(200, 45%, 34%)`
CMYK	`cmyk(45%, 15%, 0%, 66%)`
CIE LAB	`lab(29.95, -5.97, -10.81)`
CIE LCH	`lch(29.95, 12.35, 241.07)`
CIE XYZ	`xyz(5.387, 6.214, 9.93)`
Decimal	`3164759`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #304A57, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #304A57	Ratio	AA	AAA	AA large
Sample text	2.24:1	Fail	Fail	Fail
Sample text	9.36:1	Pass	Pass	Pass

#304A57 as text on	Ratio	AA	AAA	AA large
Sample text	9.36:1	Pass	Pass	Pass
Sample text	2.24:1	Fail	Fail	Fail

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #304A57 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #304a57; }
.text { color: #304a57; }
.border { border: 2px solid #304a57; }
.transparent { background-color: rgb(48 74 87 / 50%); }
.gradient { background: linear-gradient(to right, #304a57, #303657); }

Background

Text color

Border

Similar colors

Questions

What color is #304A57?: #304A57 is a dark, desaturated azure, closest to the named color Nocturne. It belongs to the gray family of colors.
What is the RGB value of #304A57?: The RGB value is 48, 74, 87: 48 red, 74 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #304A57?: The complementary color is #573D30, found by rotating the hue 180° on the color wheel.
Is black or white text better on #304A57?: White text. Black text has a contrast ratio of 2.24:1 and white text 9.36:1. WCAG asks for at least 4.5:1 for normal text.